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Titanate ceramic matrices for alumina-rich wastes

Conference Paper


Abstract


  • In the early 1980s a synroc variant, SYNROC-D, was developed for immobilisation of highlevel defence waste stored at the Savannah River Plant, USA. A key phase in the immobilisation matrix was spinel, used to immobilise the large proportion of iron and alumina in the waste. Here we examine the feasibility of this approach for other alumina-rich wastes, not necessarily containing iron, derived from the dissolution of aluminium fuel cladding. The advantages of using a magnesia spinel, as opposed to hercynite (FeAl 2O4), as the rimary alumina-bearing phase are discussed in terms of an increase in waste loading and process flexibility. Two options for sodium incorporation, glass and the titanate phase freudenbergite, are considered.

Publication Date


  • 2004

Citation


  • Begg, B. D., Vance, E. R., Li, H., McLeod, T., Scales, N., & Bhati, M. (2004). Titanate ceramic matrices for alumina-rich wastes. In Materials Research Society Symposium Proceedings Vol. 807 (pp. 321-326).

Scopus Eid


  • 2-s2.0-12844286103

Start Page


  • 321

End Page


  • 326

Volume


  • 807

Issue


Place Of Publication


Abstract


  • In the early 1980s a synroc variant, SYNROC-D, was developed for immobilisation of highlevel defence waste stored at the Savannah River Plant, USA. A key phase in the immobilisation matrix was spinel, used to immobilise the large proportion of iron and alumina in the waste. Here we examine the feasibility of this approach for other alumina-rich wastes, not necessarily containing iron, derived from the dissolution of aluminium fuel cladding. The advantages of using a magnesia spinel, as opposed to hercynite (FeAl 2O4), as the rimary alumina-bearing phase are discussed in terms of an increase in waste loading and process flexibility. Two options for sodium incorporation, glass and the titanate phase freudenbergite, are considered.

Publication Date


  • 2004

Citation


  • Begg, B. D., Vance, E. R., Li, H., McLeod, T., Scales, N., & Bhati, M. (2004). Titanate ceramic matrices for alumina-rich wastes. In Materials Research Society Symposium Proceedings Vol. 807 (pp. 321-326).

Scopus Eid


  • 2-s2.0-12844286103

Start Page


  • 321

End Page


  • 326

Volume


  • 807

Issue


Place Of Publication